Desk calendar



' 1,632, June 14, 1927. G w. ESAU 393 DES-K CALENDAR Filed Oct. 27. 1924Z'Sheets-Sheet 1 INVENTOR. I

ATTORNEYS.

G. W. ESAU DESK CALENDAR June 14, 1927.

Filed Oct. 27,1924 1 z sheets -sneat 2 INVENTOR.

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Patented June 14, 1927.

PAT T-rt GEORGE, WALTERESAUMQF iviitwli unnn,. W sconsin.

DESK sewers?- npplicationnled October "27,1924. 7 Serial No. 746,033.

My invention relates to desk calendars,

and more specifically, to an improved mechanically operated deskcalendar; One object of the invention is to provide a mechanicallyoperated desk calendar of attractive appearance with indicia ofsuflicient size to make it a satisfactory calendaiyfas well as amechanical ,toy. I

Another object is to provide for regular savings by requiring thedeposit of coin each day to bring the calendar up, to date.

One of the primary diflicul ties in accomplishing the above object is inthe provi on a-ndproper actuation of'separate indicating elements fortheunits and tens digits ofthe number indicating the dateot the month,so that upon successive actuation, the indication willprogress to 31 andchange to 1 on the next actuation; If the indicia are to be large enoughto be easily seen and read at a glance,so that the device is reallyacalendar, it is obviously impracticable to have 31 numbers on a singleindicating. element. This is apparent when it is considered that thenumerals are tobe aninch high,'the diameter of the singlerotaryindicatingfeflementcarrying numbers would need to be substantially onefoot.

7 Another objectof the ,inventionis, therefore, to providealtransmissionbetween two indicating wheels, such that: the indicationwill increase by one upon each actuationup to 31 and on the nextactuation return, not to Zero, ,but to one. I i i i lAnother object isto provide means for suitably indicating the montlisiin connection withthe above mentioned meaiis for indicating the day ofthe m onth.

Further objects and advantages of my .invention will become apparent asthe description proceeds. V

y In the accompanyingdrawings:

Fig. 1 is a front elevationo't an illustrative device embodying myinvention, and

Fig. 2 is a central vertical sectionthr ugh theeasing and transmission,the indicating wheels being broken away rene in con struction moreclearly.

Fig. Sis a section on line 33, Ot'Fig Q,

Figs. i and 5 are sections 911 lines" and 5-5 of Fig. 2; and

Fig. 6 is a section on line 44. the other direction. i

Fig. 7 is a detailsection on line 77 of Fig; 5.

looking in In the embodiment of myinvention sele cted for illustration,the entire casing 10 is preferablyformedfof a single sheet metalstamping. Suitableapertures are provided at 12 t'or mounting atransparent window, and at 14 for the admission of a coin, and thebottom of the casing is closed by a plate 16 provided with a door 18,preferably tastened closed position by a "spring catch 20.

The main pintle or shaft 222 extends longitudinally from end to .end andis riveted over outside the endsot the casing 10. The tens indicator 24is carried on a sleeve 26 rotatable on shaft 22 and carrying at its e2:-treme'end's gear elements 28 and 30. The units indicator 32 is mountedon a sleeve 34c rotatable on sleeve 26 and carrying agear elem-ent 36 atits outer end. "The months indicator 38may be similarly mounted, but inthis instance, the use of a sleeve is not necessary, and I-haveillustrated it as mounted directly on sleeve 26. It carries a gearele' ment 4. 0 atits outer end. The primary drive means for these wheelscomprises a plate 420i the same thickness as the coin to be employed,and having a plurality of serrations a4,;tl1irtyone in number, adaptedto be successively engaged by successive coins to be rotated thereby onestep at a time. Side plates a6; and 48 are suitably attached to" plate42 and extend radially beyond the same-todefine a slot for receiving thecoin. Two internal ring gears 50 and'52 are carried by plate 48, gear 50lying in the plane of gear 36 gear 30.

"The interconnections between the parts for operating them in the propersequence will now described. Each time a coin is inserted throughaperture 14, it is held in operative engagement with one oi theserrations; a l by means of an inturned lip 5st on the casing, asufficient. length of time to and gear 52 in the plane of move plate lQ.substantially one serration.

A suitable, spring 541- is provided, having a curved end to engagebetween the serrations and insure astep by step movement. Teeth of gear50 mesh with an intermediate pinion 56, which pinion drives pinion 36and the units indicator 32. As gear 50 is athirtyone toothed gear and:pinion .36 has ten teeth, each movement o'li plate 42 will. rotate theunitindicator 32 one-tenth of the revolution. This indicator. carriesthe series of indicia 1, 2, '3, a, 5, 6, 7, 8, 9, O.

IOU

The tens indicator 24 is driven through pinion 30 and intermediatepinion 58 from ring gear 52, which has only four teeth spaced apart byintervals equal to ten, ten, nine and two actuations of plate Q2. Theindicia carriedby indicator 2et comprise a series 1, 2, 3, blank,repeated three times, di-

viding the circle into twelve equal parts, and pinion 30 has twelveteeth. The parts are so assembled that tooth 30 will move indicator 2ifrom 3 to blank, after nine more actuations tooth 62 will move it fromblank to l, after ten more actuations tooth Set will move it from 1 to2, after ten more actua cator 32 reads 0. Upon the next actuation,

indicator will remain stationary, and the last tooth before space 68willmove indi cator 32 from O to 1. On the next actuation, tooth willmove indicator 2a from 3 to blank, but the movement of gear 50 willmerely carry space 68 across, so that the first toot-h beyond it willengage pinion 56 on the next actuation. In this way, by driving bot-hindicators 21 and 32direct :trom plate 42 by independent transmissions,the correct sequence is obtained.

Gear 28 on the other endoi' sleeve 26 has three equidistantly spacedteeth, which mesh with an intermediate pinion 70 pivoted on the wall ofcasing 10. Pinion 70 is of double width, and is continuously in meshwith pinion it). It will be apparent that each time indicator 2acompletes one-third of a revolution, one of the teeth of pinion 28' willmove the months indicator 38 one step.

Suitable stop springs 72 are employed to prevent accidental displacementof each of the indicators, and assure step by step movement. I prefer tomount these springs on the end walls of casing 10, and to have themengage the intermediate drive pinion in each instance. The indiciacarried by all three indicators should preferably be ot the same size,and the indicia on indicator 32 will be spaced further apart than on theother indicators. it should be noted that no indicater moves less thanone-twelfth of a revoployed if thirty-one indicia were to be carried ona single indicator.

Without further elaboration, the foregoing will so fully explain thegist of my invention,that others may, by applying current knowledge,readily adapt the same, for use under various conditions of service. Itwill for instance be obvious, that the shape or" the casing may bevariedaccording to any one of a large number of pleasing designs, and that thesloping sides illustrated in the embodiment shown in the drawings maybecorrugated to retain pens and pencils, if desired. 7 These and manyother modifications and alterations. may readily be.

made without eliminating certain features which may properly be said toconstitute the essential items oi novelty involved, which items areintended to be defined and secured to me by the following claims.

I claim as follows:

1. In a calendar of the class described, the combination of a housing, ashaft extending through and secured to the housing walls, a sleeverotatable on said shaft, a

tens date wheel secured on said sleeve to rotate therewith, a units datewheel journaled oirsaid s-eeve to rotate thereon, an actuating memberconcentric with said shalt and adapted to rotate independently thereofand ot said units wheel, said actuating member having 31 teeth thereon,means for inserting coins into said housing and against said actuatingmember to advance such member one tooth for each coin inserted, adriving gear connected with said actuating member, a pinion secured tosaid units wheel, a transmission gear between said driving gear and saidpinion, a second drivmg gear connected with said actuating memher, apinion secured on said sleeve, and a transmission gear between saidsecond driving gear and said sleeve pinion, said units wheel having tendate indications l to O thereon, said tens wheel having the indicationseries 1, 2, 3 and blank three times repeated, said transmission gearsbeing proportioned to cause one step advancements of said wheels foreach one tooth advancement of said actuating member.

2. In a calendar or the class described, the combination of a housing, ashai t secured in said housing, a sleeve journaled thereon, a tens datewheel secured on said sleeve to rotate therewith, a units date wheeljournaled on said sleeve to rotate-thereon, an actuating memberconcentric with said shatt and rotatable relative thereto and to saidwheels, said actuating member having 31 teeth, a coin slot, meanscontrolled by the insertion of a coin for advancing said actuatingmember the distance of one tooth, an annular gear secured to saidactuating member, a pinion connected with said units wheel, atransmission gear between said annular gear and said pinion, a secondannular gear carried by said actuating member,

a pinionon said sleeve, and a transmission gear between said secondannular gear and said sleeve pinion, said annular gears, pinions andtransmission gears being proportioned to cause rotation of the datewheels to indicate successive dates when said actuating member isprogressively advanced,

3. In a calendar device of the class described, the combination of ahousing, a shaft supported in said housing, a sleeve journaled on saidshaft, a units wheel journaled on said sleeve to rotate thereon, a tensdate wheel secured on said sleeve to rotate therewith, a month Wheeljournaled on said sleeve to rotate thereon, an actuating memberconcentric with said shaft and rotatable relative to said Wheels, coininserting mechanism for said housing, means for causing an inserted cointo effect a 1/31 part of a complete revolution of said actuating member,and a transmission train between said actuating member and each of saidWheels, said trains being proportioned to cause said wheels to be set upto indicate the date as said actuating member is progressively advancedby the insertion of coins.

In witness whereof, I hereunto subscribe my name this 22nd day ofOctober A. D., 1924;.

GEORGE W'. ESAU.

